drm/amd/display: Power eDP panel back ON before link training retry

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[why]
When link training failures occur for eDP, dp_disable_link_phy
is called which powers OFF eDP panel. After link training retry
delay, the next retry begins by calling dp_enable_link_phy
which does not issue a correspnding eDP panel power ON, leaving
panel powered OFF which leads to display OFF/dark.

[how]
Power ON eDP before next link training retry.

Signed-off-by: Ashley Thomas <Ashley.Thomas2@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Ashley Thomas 2020-08-06 19:18:37 -07:00 • committed by Alex Deucher

parent 5cd04c4846

commit 172c9b7781

3 changed files with 74 additions and 22 deletions

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6

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

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6

drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c

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82

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

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